SOLVED: Cannot retrieve more than A-Z alterable values..but able to use them

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SOLVED: Cannot retrieve more than A-Z alterable values..but able to use them

Maybe I am doing something wrong, but in my CTF2.5 with the DLC, I cannot retrieve more than A-Z alterable values. However, when I edit the expression manually (e.g. changing Alterable Value A("Object") to AB, it works.
Or is this correct? If so, I am sorry!